Key Terms

Define the term Protocol: Computers set of rules governing the format of messages that are exchanged between computers.

What are the following protocols used for?

TCP/IP: Transmission Control Protocol

Http: Hyper Text Transfer Protocol: the standard protocol for transferring hypertext documents on the World Wide Web Compare HTML.

SMTP: Simple Mail Transfer Protocol: transferring e-mail messages over the internet.

Pop: Internet Post Office Protocol: brings e-mail to and from a mail server.

FTP:File Transfer Protocol: a software protocol for exchanging information between computers over a network.

What does GUI stand for? What was used before GUI?

Graphical user interface, PUI was used before GUI, contributed to information to technology and hardware.

There are two methods of data transmission – serial and parallel. Explain the difference between them.

A serial data transmission is when the data is sent in single elements were they are sent in different pathways. Where a parallel data transmission is sent as a total.

Define the term “URL”. Explain the components that make up the URL.

Uniform Resource Locator: a protocol for specifying addresses on the internet.
A Scheme
A Host
A Path
A Query string

In the context of data transmission, what is “error detection”?

Is the detection of errors caused by noise or other impairments during transmission from the transmitter to the receiver.

Name and explain one common method of error detection.

A hash function adds a fixed-length tag to a message, which enables reciveres to verify the delivered message by recomputing the tag and comparing it with one provided.

What is HTML and explain why it is important

Hypertext Mark-up Language is used to make webpage's.